Brightwell Aquatics ABAMAG500 Magnesion Liquid Salt Water Conditioners for Aquarium， 17-Ounce</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Provides magnesium to regulate balance of calcium and carbonates in aquarium</li><li>Highly-Concentrated ionic magnesium solution</li><li>Contains no unwanted organic materials including EDTA</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41UqEqQawML.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31YaTMDDKIL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31bi0%2BZ9kjL.jpg' noproxy></br>